Zte ZTEC370 User Manual page 59

－30 S auto-guard: Phones' key will be locked automatically 30
seconds after the last pressing.
－2 M auto-guard: Phones' key will be locked automatically 2
minutes after the last key pressing.
3. Press OK key/Left select key to confirm.
Note：
- Hold # key to lock the key directly in standby mode.
- In state of key lock, to make use of phone, unlocking code
prompted by phone on the display should be input.
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